Cam, there is a Hidden Immunity Idol here on Exile Island. Here is how you can find it. Every hour, you may post *searches for the HII*. You may do this as many times as you want before you leave Exile Island, but each post must be at least an hour apart. Each time you search for the Idol, your chance of finding it goes up by one percent. So the first time you look for it, you have a one percent chance of finding it. The second time you have a two percent chance, and so on. Random.org will decide if you find it or not.
Good luck!